拉瓦尔喷管喉部区域当量直径液力测量方法

doi:10.3969/j.issn.1000-1093.2018.06.012

兵工学报 ›› 2018, Vol. 39 ›› Issue (6): 1125-1131.doi: 10.3969/j.issn.1000-1093.2018.06.012

拉瓦尔喷管喉部区域当量直径液力测量方法

张翔¹，孙晓红²，潘旭东¹，王广林¹

(1.哈尔滨工业大学机电工程学院, 黑龙江哈尔滨 150001; 2.南京晨光集团有限责任公司数控加工部, 江苏南京 210006)

收稿日期:2017-10-08 修回日期:2017-10-08 上线日期:2018-07-29
作者简介:张翔（1982—），男，高级工程师，博士。E-mail: zhangxiang1982@hit.edu.cn;
王广林（1960—），男，教授，博士生导师。 E-mail: glwang@hit.edu.cn
基金资助:
航天科学技术基金项目（2017年）

Hydraulic Measurement Method for Equivalent Diameter of Laval Nozzle Throat

ZHANG Xiang¹， SUN Xiao-hong²， PAN Xu-dong¹， WANG Guang-lin¹

（1.School of Mechatronics Engineering, Harbin Institute of Technology,Harbin 150001, Heilongjiang, China;2.CNC Machining Division, Aerosun Corporation, Nanjing 210006, Jiangsu, China)

Received:2017-10-08 Revised:2017-10-08 Online:2018-07-29

摘要/Abstract

摘要： 拉瓦尔喷管喉径尺寸要求严格，现有成熟的深孔测量方法无法直接应用于拉瓦尔喷管喉部区域当量直径测量。在分析拉瓦尔喷管喉部区域当量直径液力测量的孔口流动模型基础上，提出了基于芯型测头塞规法的拉瓦尔喷管喉部区域当量直径液力测量方法，分析了芯型测头塞规尺寸与孔口流动模型及其相对灵敏度的关系。优选了短孔模型作为拉瓦尔喷管喉部区域当量直径液力测量的基本模型，确定了当量直径液力测量参数，研制了当量直径液力测量原型装置。在该装置上进行了测量试验，分析了芯型测头塞规直径和测量压差对喉部区域过流流量的影响。最终的重复性试验结果表明，该方法的测量重复性误差为±0.001 8 mm，能够满足拉瓦尔喷管喉部区域当量直径测量需要。

关键词: 拉瓦尔喷管, 当量直径, 芯型测头塞规, 液力测量

Abstract: The requirements of Laval nozzle size are quite strict, and the existing measurement methods can not be used to measure the equivalent diameter of Laval nozzle throat directly. A hydraulic measurement method for measuring the equivalent diameter of Laval nozzle throat based on the core plug gauge is proposed through the analysis of the orifice flow of the throat’s equivalent diameter measurement model. The relationships among the plug gauge size, orifice flow model and its relative sensitivity are analyzed. On this basis, the short orifice flow model is taken as the model for measuring the equivalent diameter of throat. The measurement parameters are determined, and a measurement prototype device is developed. The repeatability error of the proposed measurement method is ±0.001 8 mm. Key

Key words: Lavalnozzle, equivalentdiameter, corepluggauge, hydraulicmeasurement

中图分类号:

V432

张翔，孙晓红，潘旭东，王广林. 拉瓦尔喷管喉部区域当量直径液力测量方法[J]. 兵工学报, 2018, 39(6): 1125-1131.

ZHANG Xiang， SUN Xiao-hong， PAN Xu-dong， WANG Guang-lin. Hydraulic Measurement Method for Equivalent Diameter of Laval Nozzle Throat[J]. Acta Armamentarii, 2018, 39(6): 1125-1131.

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第39卷第6期
2018 年6月兵工学报ACTA
ARMAMENTARIIVol.39No.6Jun.2018

拉瓦尔喷管喉部区域当量直径液力测量方法

Hydraulic Measurement Method for Equivalent Diameter of Laval Nozzle Throat

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